221132134411 has 4 divisors (see below), whose sum is σ = 226274742232. Its totient is φ = 215989526592.

The previous prime is 221132134397. The next prime is 221132134417. The reversal of 221132134411 is 114431231122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221132134411 - 2²⁷ = 220997916683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221132134417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2571303846 + ... + 2571303931.

It is an arithmetic number, because the mean of its divisors is an integer number (56568685558).

Almost surely, 2^221132134411 is an apocalyptic number.

221132134411 is a deficient number, since it is larger than the sum of its proper divisors (5142607821).

221132134411 is an equidigital number, since it uses as much as digits as its factorization.

221132134411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5142607820.

The product of its digits is 1152, while the sum is 25.

Adding to 221132134411 its reverse (114431231122), we get a palindrome (335563365533).

The spelling of 221132134411 in words is "two hundred twenty-one billion, one hundred thirty-two million, one hundred thirty-four thousand, four hundred eleven".